/**
 * Licensed to Apereo under one or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information regarding copyright ownership. Apereo
 * licenses this file to you under the Apache License, Version 2.0 (the "License"); you may not use
 * this file except in compliance with the License. You may obtain a copy of the License at the
 * following location:
 *
 * <p>http://www.apache.org/licenses/LICENSE-2.0
 *
 * <p>Unless required by applicable law or agreed to in writing, software distributed under the
 * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 * express or implied. See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apereo.portal.portlets.flow;

import javax.portlet.ActionResponse;
import javax.portlet.PortletModeException;
import javax.portlet.WindowStateException;
import org.apereo.portal.portlet.PortletUtils;
import org.springframework.webflow.context.ExternalContext;

/**
 * Helper methods to allow setting window states and portlet modes during flow exections
 *
 */
public class PortletUrlFlowHelper {
    public void setWindowState(ExternalContext externalContext, String windowState) {
        final ActionResponse actionResponse;
        try {
            actionResponse = (ActionResponse) externalContext.getNativeResponse();
        } catch (ClassCastException e) {
            throw new IllegalArgumentException(
                    "setWindowState can only be called during an action request", e);
        }

        try {
            actionResponse.setWindowState(PortletUtils.getWindowState(windowState));
        } catch (WindowStateException e) {
            throw new IllegalArgumentException(
                    "The specified WindowState '" + windowState + "' is not valid", e);
        }
    }

    public void setPortletMode(ExternalContext externalContext, String portletMode) {
        final ActionResponse actionResponse;
        try {
            actionResponse = (ActionResponse) externalContext.getNativeResponse();
        } catch (ClassCastException e) {
            throw new IllegalArgumentException(
                    "setPortletMode can only be called during an action request", e);
        }

        try {
            actionResponse.setPortletMode(PortletUtils.getPortletMode(portletMode));
        } catch (PortletModeException e) {
            throw new IllegalArgumentException(
                    "The specified PortletMode '" + portletMode + "' is not valid", e);
        }
    }
}